Black spot formation and growth in polymeric light-emitting diodes

  • Seong Hyun Kim
  • , Hye Yong Chu
  • , Jeong Ik Lee
  • , Yong Suk Yang
  • , Hyoyoung Lee
  • , Jiyoung Oh
  • , Lee Mi Do
  • , Taehyoung Zyung

Research output: Contribution to journalArticlepeer-review

Abstract

Single-layer polymer electroluminescent devices with poly(2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylenevinylene) (MEH-PPV) were fabricated and current(I) - voltage(V) - electroluminescence(EL) measurements were performed. EL images were observed and recorded by using a CCD camera, and black spot growth was observed in the time domain. We discuss the origin of black spot formation and its growth by using the results of the I-V-EL measurements and image observations. A simple phenomenological model is proposed to describe black spot growth.

Original languageEnglish
Pages (from-to)1027-1031
Number of pages5
JournalJournal of the Korean Physical Society
Volume39
Issue number6
StatePublished - Dec 2001
Externally publishedYes

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